>>188370
this seems to be a semi-recent thing because I'm used to the late-00s/early-10s where I'd see a lot of japanese players who were very heavily into using MAME for arcade games
you'd also see a ton of Japanese players on GGPO/fightcade and shit
even now, there are a lot more japanese players using arcade data PC rips to play at home than you'd expect; I suspect the majority of high level IIDX and DDR players do it lmao
could just be the arcade player crowd just not caring so much though

I will say that there was definitely a shift where japanese people started getting really fucking anal about piracy, or at least got more vocal about it